/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MoviePipelineBlueprintLibrary.h
In case of Overscan percentage being higher than 0 we render additional pixels. This function returns the resolution with overscan taken into account.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Movie Render Pipeline") static FIntPoint GetEffectiveOutputResolution ( [UMoviePipelinePrimaryConfig](API\Plugins\MovieRenderPipelineCore\UMoviePipelinePrimaryConfig) * InPrimaryConfig, [UMoviePipelineExecutorShot](API\Plugins\MovieRenderPipelineCore\UMoviePipelineExecutorShot) * InPipelineExecutorShot )